getEphemeralKeyPair
Gets the ephemeral key pair to use to establish a secure channel with the verifier.
Applications should use this key-pair for the communications channel with the verifier using a protocol / cipher-suite appropriate for the application. One example of such a protocol is the one used for Mobile Driving Licenses, see ISO 18013-5.
Return
ephemeral key pair to use to establish a secure channel with a reader.